mirror of
https://github.com/vercel-labs/scriptc.git
synced 2026-10-23 06:10:02 +08:00
Chris Tate
94fd361b54
Represent ordinary JavaScript arrays with hole, value, and explicit-undefined states; add sparse side storage and carry missing values through the frontend, native backends, runtime, and Node-facing consumers.
21 lines
539 B
TypeScript
21 lines
539 B
TypeScript
type MaybeNumber = number | undefined;
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function describe(label: string, values: MaybeNumber[]): void {
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const visits: string[] = [];
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values.forEach((value, index) => {
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visits.push(index + ":" + value);
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});
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console.log(label, values.length, visits.join("|"));
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}
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const values: MaybeNumber[] = [];
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values[4] = 30;
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values[1] = undefined;
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values[3] = 10;
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const alias = values;
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describe("before", values);
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values.sort((left, right) => (left ?? 0) - (right ?? 0));
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describe("sorted", values);
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console.log("same", alias === values);
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